DE3343015A1 - BICYCLE PEDAL - Google Patents

Description

MOUNTAIN ■ S'iAFfF · SCHWABE · SaiyDMAik

■ ^: - - PATENTANWÄLTE _ _

3 3 4 3 01b

MAUERKIRCHERSTRASSE 45 BOOO MUNICH 80

Shimano Industrial

Company Limited,

Osaka / JAPAN November 28, 1983

Attorney's file 33 152 VI

Bicycle pedal

This invention relates to a pedal for a bicycle, and more particularly to a pedal for a bicycle having a pedal shaft and a pedal body rotatably supported thereon.

In a conventional manner, the bicycle pedal is provided with a foot support surface or footrest on the pedal body, on which the driver puts his soot to step on the pedals. In this case, the sole of his foot becomes brought into contact pressure with the footrest in order to be directly exposed to the opposing force from stepping on the pedals so that the driver tends to tire from stepping on the pedals in an uncomfortable way.

• mRQ, QAfl · 79 74 Telex 524 560BERGd Bank accounts Bayer. Vetemsbank Munich 4b3100 (BlZ 700 202 ^! 0)

* iea, a t, mVi-able) VI / B / WWop.eier (089) 963048 Hypo-Bank Muncher 4410122850 (BLZ 70020011, Sw. «Code HrPO DE

BEBGSTAPFPATENT Munich KaII * Inlotec 63S0 &, Il, III Postscheck Munich 65343-808 (BLZ 7OO10Ü80)

BATH

On the other hand, a pedal has already been proposed, which a Pußrast made of elastic material separated from Pedal body used, or has a part with a footrest that is separate from the pedal body and on it is supported in an elastically displaceable manner. Such a pedal, however, has the problem that the number of parts increases and the footrest and the part in the pedal body must be assembled, what leads to high manufacturing costs, and that the durability of the pedal decreases after long use, so that it causes the footrest or part to fall off the pedal body.

The main object of the invention is to provide a bicycle pedal which has a pedal body molded from synthetic resin and a footrest part with a footrest formed integrally with the main body of the pedal body is so that the footrest member is elastic by utilizing the flexibility of the synthetic resin of the pedal body is moved, wherein the pedal is simple in structure, a saving in the number of parts brings the cyclist does not communicate any bumps and gives him a comfortable feeling while pedaling.

Another object of the invention is to provide a bicycle pedal to provide, which further develops the footrest part so that

it has an elastic foot rest or foot rest surface which has the desired elasticity distribution, the corresponds well to the operating conditions, is simple in construction and has fewer parts, whereby it is here the cyclist should be able to step on the bicycle pedals without being uncomfortable or uncomfortable To experience feeling.

This invention is characterized in that the pedal body, which is rotatably supported on the pedal shaft, is molded from synthetic resin and has a main body comprising bearings and footrest parts in such a way that that the footrest parts are integral with the main body elastically movable sections are connected which are elastically deflectable with respect to the main body.

Accordingly, the footrest parts, which are moved away elastically with respect to the main body, serve as a cushion for the foot of the cyclist while pedaling and allow him to step on the bicycle pedals without feeling a bump. As a result, the cyclist kicks the pedals have a pleasant or comfortable feeling and will be used even if he has been cycling for a long time drives, less tired.

The elastically movable portions which are integrally formed with the main body make use of the elasticity

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of the resin of the pedal body so that the footrest parts are simple in construction and not incorporated into the main body need to be built in, compared to the

conventional pedal body, whereby there is no fear that the footrest parts come free from the pedal body.

S Furthermore, this invention is also characterized in that the footrest parts, as discussed further below, are designed in this way are that they can be moved as desired, and that the amount of elastic movement at each point the footrest parts are different from one another.

First of all, the footrest parts are arranged on the front and back of the main body and are thus formed in one piece, namely by bridges, which serve as elastically displaceable sections, with the foot rest parts deflects in such a way that they coincide in a meaningful manner with stepping on the pedal.

Second, the main body comprises a housing, with bearings and frame parts extending along the length of the pedal extend, wherein the Fußrastteile are arranged between the frame parts and at least with housing or Frame parts are connected, in such an assignment that they can be moved by the elastically Sections are elastically displaceable, and the Fußrastflächen on the Fußrastteile are outward with respect to the Extended footrest on the main body.

With such a structure, the frame members are mainly formed as a skeleton that the main body can absorb pedal force after bending away the footrest parts, even with a large load the pedal force is transmitted to the pedal body without reducing the transmission efficiency.

The footrest parts are not fixed in their special arrangement, but many such parts are elastic Slidable sections attached to each the amount of elastic displacement of each Fußrastteiles change, allowing the cyclist to stepping on the bicycle pedals with a comfortable feeling due to the appropriate displacement of each footrest part.

The above and other objects of the invention are set forth in the detailed description and examples below can be seen in more detail.

In the drawing is:

Fig. 1 is a plan view of an embodiment a bicycle pedal according to the invention,

FIG. 2 is a partially cutaway plan view of a major portion of the embodiment of FIG Fig. 1,

Fig. 3 is a central longitudinal section of the same.

4 to 11 each show a modified version Embodiment of the pedal according to the invention, wherein

4, 6, 8 and 10 are schematic top views of the modified ones Embodiments are,

Figure 5 is a schematic view of a section taken along line A-A in Figure 4;

6 shows the plan view of a pedal according to the invention,

Fig. 7 is a schematic view of a section taken along line B-B in Fig. 6;

8 shows a plan view of a pedal according to the invention,

Fig. 9 is a schematic view of a section taken along line C-C in Fig. 8;

10 is a plan view of a pedal according to the invention,

11 is a schematic view of a section, the taken along line D-D in Fig. 10,

12 to 18 each show a representation of a different modified one Embodiment of the invention, wherein

Fig. 12 is a front view of another modified embodiment,

Fig. 13 is a rear view thereof,

Figure 14 is a sectional view taken along line E-E in Figure 12;

Fig. 15 is an inside view of a first split part forming a pedal body;

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Fig. 16 is a left side view of the first split body;

Figure 17 is a sectional view taken along line F-F in Figure 15;

Fig. 18 is a sectional view taken along line G-G in Fig. 12, wherein the first and second split pieces are shown prior to being joined together, and

19 is a perspective view of yet another modified embodiment of the invention;

A typical embodiment of an inventive Bicycle pedals will be described with reference to FIGS. 1 to 3, wherein the reference numeral -1 denotes a pedal shaft which is on free end of a crank arm on a crank device for the bike is appropriate. The pedal shaft 1 includes a shaft mounting portion 11 and a shaft supporting portion 12 extending axially outward from one end of the shaft mounting portion 11, the shaft mounting portion 11 is provided on its outer circumference with a thread 13, while the shaft support portion 12 on the outer circumference of its root with a bearing ball running track 14 and is provided on the outer circumference of the outermost end with a thread 15, which a ball holder 2 carries, which has a bearing ball track 21 on v / eist.

Numeral 3 denotes a pedal body made of synthetic resin. The pedal body 3 has on: a main body 30 that has a housing 31 urriaEt that is provided with a through hole 31a through which the shaft support section 12 is freely inserted through it, and a frame part 32 which extends from the housing 31 extends out to the front and rear and is designed as a whole as a frame, as well as foot rest parts 4, which are still are discussed below, these parts being formed integrally with one another. A sleeve 16 is in the passage s bore 31a fitted, and bushings 17 and 18, the bearing ball running tracks 17a and 18a opposite the bearing ball running balls 14 and 21 are each fitted into one of the two open axial ends of the sleeve 16, and between the bearing ball tracks 14 and 17a and the tracks 21 and 18a are each balls 19 inserted so that the pedal body 3 is thereby rotatably supported on the pedal shaft 1.

The frame part 32 comprises a first and second frame part 32a and 32b, each extending from the two longitudinal ends of the housing 31 extend forwards and backwards with respect to the direction of travel of the bicycle, a third Frame part 32c connecting the free front ends of the first and second frame parts 32a and 32b, and a fourth frame part 32d, which connects the free rear ends of these parts, these frame parts 32a to 32d too

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a framework or frame are formed so that the upper surfaces of the housing 31 and these frame parts 32a to 32d form the above-mentioned footrest surfaces 33.

The pedal body 3 is also formed from, for example, polypropylene resin, and the sleeve 16 and the bushings 17 are also formed and 18 are used as part of the mold, making them are integrally connected to the body 3, the foot locking surfaces 33, as shown in Fig. 3, curved overall are to touch the sole of a cyclist's foot from the toe to the arch of the sole of the foot about in to s t inimes.

Next, the footrest parts 4 formed integrally with the main body 30 will be described.

In the embodiment of FIGS. 1 to 3 extend the footrest parts 4 from the third and fourth frame parts 32c and 3 2g to the housing 31 in such an assignment that they each lead gradually upwards and away from the foot locking surface 33, and are integral with the pedal body 3 shaped so that they have the upper foot locking surfaces. Between the footrest parts 4 and the third and fourth frame parts 3 2c and 3 2d are elastically displaceable sections 4a, each as hinge connections so provided that the material property of the polypropylene resin used in the pedal body 3,

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is used to support the foot bearing surfaces on the foot bearing parts 4 can be displaced via the hinge connections, as indicated by the dash-double-dotted line Line in Fig. 3 is shown.

In the same embodiment, the footrest parts are 4 each at the free end bent downwards at an angle, like shown in Fig. 3, in order to avoid contact with the sole of the cyclist, and are on the foot rest areas provided with a number of grooves 4b against slipping.

In addition, in FIG. 2 the reference numeral 22 denotes a lock nut and 23 a cover, and in FIG. 3 Reference numeral 5 denotes reflex reflectors detachably attached to the front and rear surfaces of the housing 31 and 6 denotes a balance weight embedded in the lower portion of the housing 31 is to keep the Fußrastfläche 33 always facing upwards.

In the pedal according to the invention with the one described above Structure shifts when the cyclist on the pedal body 3 on his sole from the toe up occurs to the curvature of the sole, its treading force makes sense elastic the footrest parts 4, as shown in Fig. 3, and when the pedaling force increases in order to

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To increase locking parts 4, his foot comes into elastic pressure contact on the sole with the foot bearing surface 33. In other words, the driver can with the sole against the footrest surface 33 while pedaling rest without feeling any shock, because the Fußrastteile 4 serve as padding, where he is in the Pedaling the bicycle without feeling uncomfortable or tiring, even if it lasts for a long time Time drives.

The foot locking parts 4 can also be provided as shown in FIGS. 4 to 11.

Reference is now made to Figures 4 and 5; Footrest parts 41 extend from the housing 31 to the third and fourth frame parts 32c and 3 2d in each case via elastic deformable terminals 41a. Reference is now made to Figures 6 and 7; the footrest parts 4 2 extend from the third and fourth frame parts 3 2c and 3 2d halfway to the housing 31, namely via elastically evasive connections 42a, and the foot-locking parts 43 extend from the housing 31 halfway to the third and fourth frame parts 3 2c and 32d, each via elastically deformable connections 4 3a.

Reference is now made to FIGS. 8 and 9, footrest parts 44 extend from the second frame part 3 2b to the first frame part 32a, namely via elastically deformed

th

visible connections 44a. Reference is made to Figures 10 and 11; Fußrastteile 4 5 extend from the second Frame part 32b halfway to the first frame part 32a, via elastically deformable connections 45a, and footrest parts 4 6 extend halfway from the first frame part 32a to the second frame part 32b, namely each via elastically deformable connections 4 6a.

As an alternative solution, the pedal of the invention can also be modified as shown in Fig. 12 to f8 is shown.

This embodiment in those drawings is basic constructed in the same way as the pedals of FIGS. 1 to 11, but differs therefrom in that that the type of pedal body 3 forms a footrest on both sides and several footrest parts differ from each other in the degree of their elastic deformation at each point. To simplify the following In explanation, the constituent parts that are the same as those of FIGS. 1 to 11 are denoted by the same reference numerals and are omitted from explanation.

The pedal body of this embodiment includes a paired arrangement of a first divided body 7 and a second divided body 8, which vertically are divided around the pedal shaft 1. The first and

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second partial bodies 7 and 8 comprise main bodies which have partial housings 71 and 81 and partial frame parts 72 and 82, and footrest parts 47 and 48 are integrally molded with the main bodies from synthetic resin and abut against each other, to form the pedal body 3.

The partial bodies 7 and 8 are each the same Shaped shape and connected back to back. Welding ribs 70 protrude from the stop surfaces the part-body 7 and 8 from this at several points, and the bodies 7 and 8 are in pressure contact with one another brought on the opposite surfaces to the welding ribs 70 on one part of the body against the opposite To press the surface of the other. In this state, the two part bodies 7 and 8 are between each other Exposed to ultrasonic waves in order to melt the welding ribs 70 and thereby the part bodies 7 and 8 in one piece to connect with each other.

The pedal shaft 1 is in part cylinder-raised housing 71 and 01 included, which are provided on the inner surfaces rr with a plurality of ribs 71a and 81a, as well as a pair Shoulders 71b and 81b, which hold the bushings 17 and 18, vie 14 and 15 with the ribs 71a and 81a brought into contact with the outer surface of the sleeve 16, which is slipped over the pedal shaft 1, so that the sockets 17 and 18 and the sleeve 16 to the

Pedal bodies 7 and 8 attached as a single piece are.

The partial frame parts 72 and 82 are designed as a frame, which has the first frame part 72a and 82a, with fourth frame parts 72d and 82d on the same As in the first exemplary embodiment, the first frame parts 72a and 82a are connected to the housings 71 and 81 are, and wherein the second frame parts 72b and 82b from the housings 71 by a respective distance d and 81 are separated as shown in Figs. The frame parts 72 and 82 also include cavities a, as shown in Fig. 18 to thereby reduce warpage, such as a sink mark or a bend, caused during the shaping process, and to reduce the weight of the pedal bodies 7 and 8.

The footrest parts 47 and 48 are integrally connected to the main bodies, namely the housings 71 and 81 as well the frame parts 72 and 82, in each case via elastically deformable sections. In this embodiment the foot rest part 4 7 is formed on a first part body 7 and the foot rest part 48 is formed on a second part body 8, the foot locking parts 47 and 48 being integral with the third frame parts 72c and 82c and the fourth Frame parts 72d and 82d are formed, specifically via elastically deformable connections 73 and 74, respectively.

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The footrest parts 4 7 and 48 on the partial bodies 7 and 8 are also in pairs on the front and rear of each housing 71 or 81 and arranged vertically opposite to each other at a distance by which the footrest parts 4 7 and 48 are elastically deflectable. In addition, these parts 47 and 48 have the same structure so that the explanation below is only based on the pairs of footrest parts 4 7 on the first partial body 7 is made for the purpose of simplifying the explanation .

The footrest parts 47, which with the third and fourth frame parts 72c and 72d on the first part body 7 by the connections 73 and 74 are coupled, respectively, comprise first and second foot detent segments 4 7a and 47b, which are located extend axially to the pedal shaft 1, as shown in Figs. The first FußrastSegmente 47a are with the third and fourth frame parts 72c and 72d by the connections 73 and 74 (hereinafter "first connections" called), which are arranged outside the pedal shaft 1 ·, while the second Fußrastsegmente 47b connected to the first foot locking segments 47a by second, elastically deformable connections 75 and 76 which are arranged axially inwardly with respect to the pedal shaft 1 and remote therefrom, and the second foot detent segments 47b and the second foot locking segments 48b on the foot locking part 48, which is opposite the second foot locking segments 4 7b, have mutually engaging

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bare projections 77 and 78, as shown in FIG.

Now, the footrest parts 4 7 constructed in the above-mentioned manner can increase the amount of elastic deformation per Distribute the unit of tread force on the footrest area in the following way:

the distribution of the elastic deformation becomes a minimum at section S ₁ of each Fußrastsegmentes 47a on the side of the first connection 73 or 74, gradually increases from section S ₁ to another section S ₂ opposite this, increases a little more

Section S ^ for each Fußrastsegment 47b, corresponding to the section S ₂ , and decreases again at the section S. opposite that S ₃ , because the engagement projections 77 and engage with each other to allow the opposing second Fußrastsegmenten 4 7b and 48b to influence each other. Accordingly, among the foot rest areas of the first foot rest segments 4 7a and 48a and the second 47b and 48b, the amount of elastic displacement per unit of treading force at sections S2 and S-. be enlarged on the side of the crank device.

In the above structure, each foot detent segment 47 differs in the amount of elastic displacement at its respective sections, in order to be elastically deformable in accordance with a load that is passed through each toe of the Is applied to the cyclist's foot, between the big toe and the little toe and during the

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Stepping on the pedal. Thus, a shock from kicking the Pedals buffered to enable the cyclist to step on the bicycle pedals without feeling uncomfortable.

The embodiment in Figs. 12 to 18, in which the gap d between the outer edges of the housing 71 and 81 and the frame parts 72b and 82b is present and at which the pedal bodies 7 and 8 are molded from synthetic resin, the frame parts 72 and 82 themselves can be elastic then deform when they are subjected to an external force, so that it is expected of the frame parts 72 and 82 can that they serve as a shock absorber to prevent this reliably that the frame parts 72 and 82, the cases 71 and 81, the pedal shaft 1 and the crank mechanism are broken by the external force.

In addition to the advantages of the shaping of the pedal body mentioned above 7 and 8 made of synthetic resin, the footrest parts 47 and 48 made of synthetic resin can be integrally formed with the pedal bodies 7 and 8, thereby reducing the number of parts and assembling labor.

In addition, the partial frame parts 72 and 82 are provided with projections 72e and 8 2e which prevent slipping, and the sub-housings 71 and 81 are also provided with such protrusions 71c and 81c opposite to that Projection 72e or 82e provided.

The pedal bodies 7 and 8 can also be formed integrally with one another.

The pedal according to the invention, as in FIG. 19 shown, be constructed so that the main body of a pedal body 9 has only a housing 91 and a front footrest part 94 and a rear foot locking part 95 having the foot locking surfaces 94a and 95a and with the Housing 91 are connected to the front and rear thereof by bridges .92 and 93, which can be deflected elastically are trained. In this embodiment, the bridges 9 2 and 93 are elastically deflected so that they bend and adapt themselves sensibly to the stepping of the pedals, so that vibrations and shocks that caused by cycling, are partially swallowed by bridges 9 2 and 93 and less be passed on to the foot of the cyclist. Thus, he can get into the bicycle pedals with a less uncomfortable one Feeling and pedaling less tired, even on a long journey.

Although the invention with reference to several exemplary embodiments has been described, these exemplary embodiments are merely exemplary and limit the Invention not a.

Claims (13)

BERG STAPF: SQHW ^ Bt PATENTANWÄLTE / [: MAUERKIRCHERSTRASSE 45 8000 MUNICH 80 G O 4 O U I O Shimano Industrial
Company Limited,
Osaka / JAPAN Attorney's file 33 152 VI Bicycle pedal Expectations \ 1 x / bicycle pedal having a pedal shaft and a pedal body that is rotatably supported on the pedal shaft and is provided with a main body having bearings and Fußrastteilen, each having e ine Fußrastfläche and are provided with elastically evasive parts with which each of the foot rest surfaces on the foot rest bodies can be moved elastically with respect to the main body, characterized in that the main body (30) is made of synthetic resin, and that the elastically yielding sections (4a) are made in one piece with the main body. (QR9 ^l 9He? 7? ^7A , jr / π / n ^{1plpx 5? 1} ' ^{560BERG d} Bank accounts Bayet Vefpmsbank Munich 453100 (BLZ 700202 70) lKUiumtnr (i.Ht) U ') "1 / " / WA), ·! ,, ^ ,,,,,. ,,,, ₍ i) H9) 90.UUS) Hypo Bank Munich 4410122850 (812 70020011) Swift Code. HYPC iHHhIMi Kitlli · lnloti> c <·: <! ΙΙ (ii Il ι III Postal check Miinchi-n 65343 808 (BL? 70010080) 2. Bicycle pedal according to claim 1, wherein the main body a housing containing bearings and having a root and an outer end therethrough characterized in that frame parts (32a to d) extend forward and backward from the housing (31) extend from that the Fußrastteile (42) are arranged between the frame parts and of the housing and frame part with at least one coupled and resiliently deflectable in association with this sin.d, and that the foot rest area protrudes outwardly at each of the foot rest parts with respect to the foot rest surface on the main body. 3. Bicycle pedal according to claim 2, characterized in that the frame parts (32a to d) on the main body (30) with respect to this extend in the longitudinal direction and are designed as a frame or framework, with a first Frame part (32a), which is arranged on the side of the root of the housing (31), a second frame part (32b), the is arranged on the side of the extreme end of the housing, as well as a third and fourth frame part (3 2c, d) which the first and second frame parts at their Vorderbzw. Connect the back ends together, the footrest parts are integrally connected to the frame parts by elastically deflectable sections. 4. Bicycle pedal according to claim 3, characterized in that the foot locking parts (4) on the third and fourth frame parts (32c, d) are provided and extend towards the housing (31) via elastically deflectable sections (4a) extend. 5. Bicycle pedal according to claim 3, characterized in that the foot locking parts (4) are provided on the second frame part (32b) and extend towards the first frame part (32a) through elastically deflectable sections (4a) . 6. Bicycle pedal according to claim 3, characterized in that the first frame part (3 2b) is provided with foot locking parts (4) which extend from the first frame part (32a) to the second frame part (3 2b) and on the side of the Root of the housing (31) are arranged, and that the second frame part (32b) is provided with Fußrastteile, the extending from the second frame part to the first frame part and on the side of the extreme end of the housing are arranged. 7. Bicycle pedal according to claim 3, characterized by foot locking parts, which extend from the third and fourth frame parts extend out towards the housing and each at the Side of the third and fourth frame parts are arranged, and that Fußrastteile from the housing to the third and fourth frame part extend and are arranged on the side of the housing. 8. Bicycle pedal according to claim 3, characterized in that that the foot rest parts from the housing to the third and fourth frame part each over elastically deflectable sections extend. - 9. Bicycle pedal according to claim 2, characterized in that the foot locking parts are elongated and axially to the pedal shaft extend, and that the Fußrastflächen the Fußrastteile a different degree of elastic deflection have on the respective sections along the axial direction of the pedal shaft. 10. Bicycle pedal according to claim 2, characterized in that the foot rest parts each have a first and second foot. Have locking segment, which is elongated and formed in the axial direction of the pedal shaft, that the first Fußrastsegmente are connected to the main body by first elastically deflectable portions, which at the one Long side of the pedal shaft are arranged, and that the second Fußrastsegmente with the first Fußrastsegmenten are connected via second, elastically deflectable sections, which are axially to the pedal shaft and - with respect to the first, elastically deflectable sections - remote from this BATH ORIGINAL are ordered. 11. Bicycle pedal according to claim 2, characterized in that the frame parts on the main body rib-like with each other are connected and coupled to the housing at its root side, and that the housing at his outermost end with respect to the frame part at a distance, so that the frame part with respect to the outermost End of the housing is elastically deflectable. 12. Bicycle pedal according to claim 1, characterized in that the foot rest parts with elastically deflectable bridges are connected, which are integrally connected to the main body. 13. Bicycle pedal according to claim 12, characterized in that the foot rest parts have a front foot rest body, which is arranged in front of the main body, and a rear footrest body which is arranged behind the main body is.